%AChE activity (AChE activity after x days/AChE activity for healthy rat at day 0) (Mean ± SD, n = 8) in hippocampus at day 0 (▭) and after 3 (
), 7 (
), 10 (▬), 14 (
), 21 (
), 28 (
) and 35 days (
). Rats received daily subcutaneous injections of ET-saline-1.5, and two organogel formulation injections (at day 0): ET-BTM-300-15 and ET-BTM-500-25. (*) p < 0.05.